Quinary (base 5 or pental use quinary number systems, including Gumatj, Nunggubuyu, Kuurn Kopan Noot, Luiseño, and Saraveca. Gumatj has been reported to be a true "5–25" language, in which 25 is the higher group of 5. The Gumatj numerals are shown below:

</references>

  • Quinary Base Conversion, includes fractional part, from Math Is Fun
  • Quinary-pentavigesimal and decimal calculator, uses D'ni numerals from the Myst franchise, integers only, fan-made.